\begin{adjustbox}{center}
\begin{tikzpicture}[->, >=stealth', shorten >= 2pt, auto, node distance=8cm, thick,scale=0.8, every node/.style={transform shape}]
\tikzstyle{every edge}=[draw=black,thick]
\tikzstyle{every state}=[fill=white, draw=black, thick, text=black, scale=1]
\node[state] (1) {\begin{tabular}{c} \tikz \draw[->,very thick] (0,.75) -- (.75,0); \\ 69\% \end{tabular}};
\node[state] (2) [right of=1] {\begin{tabular}{c} \tikz \draw[->,very thick] (0,0) -- (.75,.75); \\ 30\% \end{tabular}};
\path (1) edge [loop left] node[left] {
\begin{tabular}{l}
\scalebox{.25}{\input{hist/m1-s1-1.tex}}
\\[2ex]
\begin{tabular}[b]{ll}
78\%&\\[2ex]
$\mu$: -7\% & $\sigma$: 7\%\\
$\alpha$: 0.38 & N: 11979
\end{tabular}
\end{tabular}} (1);
\path (1) edge [left] node[above] {
\scalebox{.25}{\input{hist/m1-s1-2.tex}}
\begin{tabular}[b]{ll}
21\%&\\[2ex]
$\mu$: 34\% & $\sigma$: 108\%\\
$\alpha$: 0.30 & N: 3328
\end{tabular}} (2);
\path (2) edge [bend left] node[below] {
\scalebox{.25}{\input{hist/m1-s2-1.tex}}
\begin{tabular}[b]{ll}
50\%&\\[2ex]
$\mu$: -15\% & $\sigma$: 16\%\\
$\alpha$: 0.39 & N: 3327
\end{tabular}} (1);
\path (2) edge [loop right] node[right] {
\begin{tabular}{l}
\scalebox{.25}{\input{hist/m1-s2-2.tex}}
\\[2ex]
\begin{tabular}[b]{ll}
49\%&\\[2ex]
$\mu$: 57\% & $\sigma$: 168\%\\
$\alpha$: 1.00 & N: 3277
\end{tabular}
\end{tabular}} (2);
\end{tikzpicture}\end{adjustbox}
